#ajax_process_status {
    bottom: 0;
    left: 0;
    position: fixed;
    z-index: 9999;;
}
#ajax_process_status .alert {
    margin-bottom: 0;
    opacity: 0.9;
    padding: 1px;
}
.mask {
    background-color: #000;
    bottom: 0;
    left: 0;
    opacity: 0.3;
    position: fixed;
    right: 0;
    top: 0;
}
.mask table {
    height: 100%;
    width: 100%;
}
.mask table td {
    font-size: 2.5em;
    text-align: center;
    vertical-align: middle;
}